Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kc4 win in 3 half-moves
3 Kb4 win in 5 half-moves
4 K5b5 draw
5 Ra6 draw
6 Rb5 draw
7 K5d5 loss in 2 half-moves
8 K5d6 loss in 2 half-moves
9 K6b5 loss in 2 half-moves
10 K6d5 loss in 2 half-moves
11 K6d6 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kc7 loss in 2 half-moves
14 Kd4 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Rb1 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Rb3 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rb7 loss in 2 half-moves